I Want PUBG Mobile to Restore My Original Gmail Access

I have been playing PUBG Mobile on my device using the account linked to my Gmail address “usamasunn****@gmail.com”. My game ID is 51640745068. Recently, my account was hacked, and the hacker changed the Gmail linked to the game, so I lost access to my account. As far as I can see, the hacker also connected their own Facebook account to my PUBG Mobile account without my permission. Right now, I cannot use my PUBG Mobile account because the login email has been changed, and I am very worried that the hacker may be using my account and items. I am the original owner of the account, and it was always linked to the Gmail address “usamasunn****@gmail.com” before it was hacked. I kindly request that my PUBG Mobile account with game ID 51640745068 be recovered and returned to my control, with the login changed back to my original Gmail or another secure option that you can provide. I also request that any connections made by the hacker, such as their Facebook account, be removed and that my account be secured so this does not happen again.